So I would say something is fundamentally mismatched between what I am
trying to tell Wicket to do and what it is actually doing (i.e. a RFE of
some sort).
I expect my bookmarkable pages to have fixed URLs so that the browser
can cache the images contained therein for one day. I would say it is a
bit too "black or white" to talk in terms of static vs non-static
images. Most "non-static" images can (and should) be cached for an
extended period of time; that's what the cache expiration headers are
all about and why you can specify an expiration length of more than just
"never cache" and "cache forever".
First I wonder: why is path session-specific? I would expect
bookmarkable page X to have the same URL regardless of what user was
visiting it. That is, the expectation is that "Cats" theme, page one
should have the same URL for all users (not be session-specific).
Secondly, I would say that the images contained within that page should
have URLs scoped within the page URL. That is, the ViewGrid URLs should
consist of the Page URL + some postfix.
I'm not sure "this is the way it should work". It is just a feeling
that that is the way I'd *expect* it to work for my use-case. I welcome
other suggestions for making this work with the preexisting Wicket
behavior, ideas?
Gili
Johan Compagner wrote:
don't cache non static images then.
so that images with path will always be asked for
On 10/5/05, *Gili* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Maybe that's it... If one restarts the browser and you get
path=0
again, the browser still expects the same URLs to yield the same images
but this might not be true.
Consider:
1) User hits theme "cats", gets a GridView with path=0
2) User restarts the browser, hits theme "dogs", gets a GridVie with
path=0
3) Browser uses cached images of "cats" which is incorrect.
I guess the expectation is for GridView on #1 to have
different URLs
than on #2 (regardless of browser or server restart). How would I
communicate to Wicket that the GridView's URL should differ across
pages? Alternatively, we could try to tell the browser to flush any
session-bound URLs upon shutdown -- I'm not sure if such a thing is
possible. Ideas?
Gili
Johan Compagner wrote:
> the first time path=0 is shown yes
> The second time path=1 is shown
>
> Then i restart the tomcat server, let tomcat store my sessions
> then i go again to that page. Tomcat picks up my stored session and
> starts counting from 2
> so the first time after a restart path=2.
>
> If ofcourse you completely close youre browser and start all over
again
> a new session is generated
> but then it doesn't matter if tomcat is restarted or not.
>
>
> On 10/5/05, *Gili* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>> wrote:
>
>
> My application is 100% bookmarkable pages. Is
FormInput one?
> Also, when
> I hit FormInput on wicket-library.com
<http://wicket-library.com> <http://wicket-library.com
<http://wicket-library.com>> it
> was at path=0 so I don't see
> how this could have worked for you (because it is unlikely
we'd be at
> path=0 at this point).
>
> Something doesn't sound right here. There must be a
> difference between
> what is going on on your end and mine.
>
> Gili
>
> Johan Compagner wrote:
> > not at my place.
> > Just tested it by running examples (forminput) on my
tomcat install.
> >
> > Did go a few times to the forminput page so that the
path=3 was
> showing
> > as last
> > shutdown tomcat. Started it again. Then did go to the
forminput page
> > again and the path=4 was there.
> >
> >
> > On 10/4/05, *Gili* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto: [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>
> > <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> >>> wrote:
> >
> >
> > That might be so, but practically speaking
this doesn't
> > occur. Try this
> > yourself and you will notice that "path" is always
reset to a
> value of
> > one on every server restart. For an unknown reason, it
is not
> > resumed on
> > restart. Can someone investigate this?
> >
> > Gili
> >
> > Johan Compagner wrote:
> > > Server restart should work
> > > All sessions are serialized to disk and read back in.
> > >
> > >
> > > On 10/3/05, *Gili* < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
> > <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>>
> > > <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto: [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>
> > <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>>>> wrote:
> > >
> > >
> > > Even if the images are dynamically
generated,
> couldn't we
> > > serialize the
> > > highest "path" value used on shutdown and reuse
it on
> > startup? Consider
> > > the following use-case:
> > >
> > > - Images are dynamically generated from a DB
> > > - Expiration headers are set to cache the
images for
> one day
> > on the
> > > client end
> > > - Wicket's resource cache expiration is also set to
> one day
> > >
> > > So ... while the images are dynamic,
they are
> also cached
> > > (for a
> > > limited period of time). This use-case works
fine if the
> > server is never
> > > restarted. All we'd need is a simple fix to make it
> work across
> > > restarts.
> > >
> > > Gili
> > >
> > > Eelco Hillenius wrote:
> > > > That's why we introduced packaged resources
in the
> first
> > place: to
> > > > have static urls. If you don't have static urls,
> your browser
> > > > shouldn't cache them. Don't we set expiry
headers?
> > > >
> > > > Eelco
> > > >
> > > > On 10/1/05, Gili < [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
> > <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>>
> > > <mailto: [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
> > <mailto: [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
> <mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>>>> wrote:
> > > >
> > > >>Hi,
> > > >>
> > > >> I'm using PageableGridDataView to
display a
> grid of
> > > images. Here is an
> > > >>example URL for a thumbnail on a page:
> > > >>
> > > >>
> >
>
http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener
<http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener>
> <
http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener
<http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener>>
> >
> <
http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener
<http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener>
> <
http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener
<http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener>>>
> > > <
> >
>
http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener
<http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener>
> <
http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener
<http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener>>
> >
> <
http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener
<http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener>
> <
http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener
<http://localhost:8084/DesktopBeautifierServer/Main?path=11:imageRow:1:cols:4:imageWidth:imageLink:image&interface=IResourceListener>>>>
> > > >>
> > > >> The problem is that upon server
restart the
> path
> > counter
> > > resets. Now,
> > > >>if a user hits the image listing again, his
browser
> > recognizes the
> > > >>original URL and uses the cached image. However,
> path=11
> > in the new
> > > >>server instance does not equal to path=11 in the
> old server
> > > instance, so
> > > >>the cached image is incorrect.
> > > >>
> > > >> Is there a way for us to serialize
the "path"
> > values on
> > > shutdown and
> > > >>pick them up on restart? This will ensure
the browser
> > cache doesn't
> > > >>display incorrect images. I don't mind if users
> can't hit
> > older pages
> > > >>(i.e. path=10 and below) because they don't
exist
> in the
> > new server
> > > >>instance but at least the counter should
begin at
> the last
> > used
> > > value +1
> > > >>
> > > >> Let me know what you think.
> > > >>
> > > >>Thanks,
> > > >>Gili
> > > >>--
> > > >> http://www.desktopbeautifier.com/
> > > >>
> > > >>
> > >
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